(57) A stackable lid for containers formed of a first pressed carboard sheet piece (1),
in the shape of an inverted tray the inner perimeter of which corresponds to the
outer perimeter of the container opening to be closed, and a second piece (2) of the
same material, as well in the shape of an inverted tray with a lesser diameter and
a height equivalent to the height of the first piece, the second piece being adhered
juxtaposed to the inner face of the first piece, the outer outline of the second piece
being equivalent to the inner outline of the container opening, the second tray
having a perimetral skirt (3) juxtaposed to the bottom of the first tray (1).
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